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Finding the Fourth Proportional to 773.55, 1,159.58 and 286.47

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Solution

The fourth proportional to 773.55, 1,159.58 and 286.47 is: 429.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    773.55 : 1,159.58 = 286.47 : x
  2. Step 2: Convert to fraction form
    773.55/1,159.58 = 286.47/x
  3. Step 3: Cross multiply
    773.55x = 1,159.58 × 286.47
  4. Step 4: Simplify right side
    773.55x = 332,185.60
  5. Step 5: Solve for x
    x = 332,185.60/773.55
  6. Step 6: Final answer
    x = 429.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.